Issued Patents 2002
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6487015 | Diffraction grating having multiple gratings with different cycles for generating multiple beams and optical pickup using such diffraction grating | Yukio Kurata, Takeshi Yamaguchi, Tetsuo Ueyama | 2002-11-26 |
| 6451243 | Method of molding heat-resistant containers | Minoru Takada, Koichi Sato, Kazuyuki Yokobayashi, Atsushi Sakurai | 2002-09-17 |
| 6438089 | Optical pickup device | Yukio Kurata, Tetsuo Iwaki | 2002-08-20 |
| 6388822 | Optical pickup device and optical recording medium | Yukio Kurata, Tetsuo Iwaki | 2002-05-14 |